Capital Stock, Shares Authorized

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- Definition

Conversion Of Stock, Occurrence Of Conversion Of Shares, Anniversary Of Effectiveness

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No definition available.

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- Definition

Conversion Of Stock, Occurrence Of Conversion Of Shares, Percentage Of Outstanding Shares

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No definition available.

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- Definition

Conversion of Stock, Occurrence of Conversion of Shares, Percentage of Vote Required

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No definition available.

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- Definition

Debt Instrument, Basis Spread On Variable Rate, Prior To Initial Public Offering

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No definition available.

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- Definition

Debt Instrument, Variable Interest Rate Floor

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- Definition

Debt Instrument, Variable Interest Rate Floor, Prior To Initial Public Offering

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No definition available.

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- Definition

Line of Credit Facility, Available Borrowing Capacity, Borrowing Base Advance Rate

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No definition available.

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- Definition

Face amount or stated value per share of common stock.

+ References

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- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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- Definition

The number of new shares issued in the conversion of stock in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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-Section 50
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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility.

+ References

No definition available.

+ Details

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
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- Definition

The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

+ References

+ Details

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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- Definition

Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

+ References

No definition available.

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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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-Publisher FASB
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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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Subsequent Events (Details)					9 Months Ended
Subsequent Events (Details)	Mar. 15, 2021	Mar. 03, 2021 $ / shares shares	Jan. 12, 2021 USD ($)	Dec. 19, 2019	Sep. 30, 2021 $ / shares shares	Dec. 31, 2020 $ / shares shares	Dec. 31, 2019 $ / shares shares
Subsequent Event [Line Items]
Common stock, authorized (in shares)					0	300,000,000	300,000,000
Common stock, par value (in USD per share) \| $ / shares					$ 0.00001	$ 0.00001	$ 0.00001
Preferred stock, authorized (in shares)					100,000,000	9,898,400	9,898,400
Preferred stock, par value (in USD per share) \| $ / shares					$ 0.00001	$ 0.00001	$ 0.00001
Percentage of votes required		0.6666			0.6666
Anniversary of effectiveness					7 years
Percentage of outstanding shares					0.10
Stock split, conversion ratio	3			100
ESPP
Subsequent Event [Line Items]
Number of shares reserved and authorized (in shares)		3,000,667			3,000,667
Percent of outstanding shares		1.00%			1.00%
2021 Plan
Subsequent Event [Line Items]
Number of shares reserved and authorized (in shares)					13,503,001
Percent of outstanding shares					5.00%
Common Class A
Subsequent Event [Line Items]
Common stock, authorized (in shares)					1,000,000,000	0
Common stock, par value (in USD per share) \| $ / shares					$ 0.00001	$ 0.00001
Number of shares issued in conversion (in shares)					1
Common Class B
Subsequent Event [Line Items]
Common stock, authorized (in shares)					160,000,000	0
Common stock, par value (in USD per share) \| $ / shares					$ 0.00001	$ 0.00001
Number of shares issued in conversion (in shares)					1
Revolving credit facility \| JPMorgan Chase Bank, N.A.
Subsequent Event [Line Items]
Fee on undrawn amounts			0.25%
Revolving credit facility \| JPMorgan Chase Bank, N.A. \| London Interbank Offered Rate (LIBOR)
Subsequent Event [Line Items]
Variable interest rate floor			0.50%
Margin on variable interest rate			2.75%
Margin on variable interest rate, prior to initial public offering or positive adjusted EBITDA			3.50%
Revolving credit facility \| JPMorgan Chase Bank, N.A. \| Base Rate
Subsequent Event [Line Items]
Variable interest rate floor			3.25%
Variable interest rate floor, prior to initial public offering or positive adjusted EBITDA			1.50%
Margin on variable interest rate			0.00%
Margin on variable interest rate, prior to initial public offering or positive adjusted EBITDA			2.50%
Revolving credit facility \| JP Morgan Chase Credit Agreement \| JPMorgan Chase Bank, N.A.
Subsequent Event [Line Items]
Maximum borrowing capacity \| $			$ 45,000,000
Advance rate			400.00%
Term			3 years
Letter of credit sub-facility \| JP Morgan Chase Credit Agreement \| JPMorgan Chase Bank, N.A.
Subsequent Event [Line Items]
Maximum borrowing capacity \| $			$ 5,000,000
Subsequent event
Subsequent Event [Line Items]
Capital stock, authorized (in shares)		1,260,000,000
Preferred stock, authorized (in shares)		100,000,000
Preferred stock, par value (in USD per share) \| $ / shares		$ 0.00001
Anniversary of effectiveness		7 years
Percentage of outstanding shares		0.10
Stock split, conversion ratio	3
Subsequent event \| 2021 Plan
Subsequent Event [Line Items]
Number of shares reserved and authorized (in shares)		13,503,001
Percent of outstanding shares		5.00%
Subsequent event \| Common Class A
Subsequent Event [Line Items]
Common stock, authorized (in shares)		1,000,000,000
Common stock, par value (in USD per share) \| $ / shares		$ 0.00001
Number of shares issued in conversion (in shares)		1
Subsequent event \| Common Class B
Subsequent Event [Line Items]
Common stock, authorized (in shares)		160,000,000
Common stock, par value (in USD per share) \| $ / shares		$ 0.00001
Subsequent event \| Revolving credit facility \| JPMorgan Chase Bank, N.A.
Subsequent Event [Line Items]
Fee on undrawn amounts			0.25%
Subsequent event \| Revolving credit facility \| JPMorgan Chase Bank, N.A. \| London Interbank Offered Rate (LIBOR)
Subsequent Event [Line Items]
Variable interest rate floor			0.50%
Margin on variable interest rate			2.75%
Margin on variable interest rate, prior to initial public offering or positive adjusted EBITDA			3.50%
Subsequent event \| Revolving credit facility \| JPMorgan Chase Bank, N.A. \| Base Rate
Subsequent Event [Line Items]
Variable interest rate floor			3.25%
Variable interest rate floor, prior to initial public offering or positive adjusted EBITDA			1.50%
Margin on variable interest rate			0.00%
Margin on variable interest rate, prior to initial public offering or positive adjusted EBITDA			2.50%
Subsequent event \| Revolving credit facility \| JP Morgan Chase Credit Agreement \| JPMorgan Chase Bank, N.A.
Subsequent Event [Line Items]
Maximum borrowing capacity \| $			$ 45,000,000
Advance rate			400.00%
Term			3 years
Subsequent event \| Letter of credit sub-facility \| JP Morgan Chase Credit Agreement \| JPMorgan Chase Bank, N.A.
Subsequent Event [Line Items]
Maximum borrowing capacity \| $			$ 5,000,000